http://technology.timesonline.co.uk/tol/news/tech_and_web/article2277632.eceSkype, the online phone company, was today working to fix an outage that left its 220 million users unable to make cheap calls over the internet.
The company said this morning that it was still working to resolve the problem, which was apparently caused by a fault in its software that means users could not log on to the service.
"It is still too early to call out anything definite yet we are now seeing signs of improvement, and we continue to monitor the situation through Europe waking up this morning," a statement on Skype's blog said.
Skype's chief security officer, Kurt Sauer, told the New York Times that what had happened was caused by "a unique set of events, the genesis of which is not entirely understood".
The flaw existed in every version of the Skype software that had been downloaded since 2003, engineers at the company said, but they were unsure as why the error, which had lain dormant for four years, had only affected the network now.